Hoping to hear from family

My biological family is from Colorado. I am posting some information in hopes that maybe one of the family members will see it. I was born in Kansas City MO and placed in ST. Anthony's Home for Infants right after birth. I have the names of my biological mother and all her family members. She does not want contact nor do her sisters but perhaps my half siblings may wish to contact me. I have a half sister, ZoAnne and two half brothers. , Randy and John. Our mother's maiden name was McKenna and her father was a dentist who died in 1959 of cardiac problems and had a history of bladder cancer as well. His wife whose maiden name was Milne, lived to be 97 having died in 1998. They are both laid to rest in Ft Logan Nationl Cemetery in Denver. The bio mother lives in Grandby as does my sister. The boys live in Steamboat Springs and Fraser last I knew. My bio mother is a widow, her husband died in June of 2003. She is now 81. If anyone from Colorado reads this and knows anything about this family or is a member of the family I would love to hear from you. Thanks